“…Eleven studies included drink driving enforcement activities only, such as RBTs, sobriety checkpoints, saturation patrols, drink driving arrests or a combination of these [19,21,22,26,27,[29][30][31][32][33]36]. An additional seven studies examined the effect of drink driving enforcement coordinated with publicity activities to increase the visibility of the enforcement [17,18,20,24,25,28,34]. One of these was an evaluation of high-visibility drink-driving enforcement demonstration projects in seven US states [25].…”